/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.tsfile.read.common.block.column;

import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;

public enum ColumnEncoding {
    /**
     * BOOLEAN.
     */
    BYTE_ARRAY((byte) 0),
    /**
     * INT32, FLOAT
     */
    INT32_ARRAY((byte) 1),
    /**
     * INT64, DOUBLE.
     */
    INT64_ARRAY((byte) 2),
    /**
     * TEXT.
     */
    BINARY_ARRAY((byte) 3),
    /**
     * All data types.
     */
    RLE((byte) 4);

    private final byte value;

    ColumnEncoding(byte value) {
        this.value = value;
    }

    public static ColumnEncoding deserializeFrom(ByteBuffer buffer) {
        return getColumnEncoding(buffer.get());
    }

    public void serializeTo(DataOutputStream stream) throws IOException {
        stream.writeByte(value);
    }

    private static ColumnEncoding getColumnEncoding(byte value) {
        switch (value) {
            case 0:
                return BYTE_ARRAY;
            case 1:
                return INT32_ARRAY;
            case 2:
                return INT64_ARRAY;
            case 3:
                return BINARY_ARRAY;
            case 4:
                return RLE;
            default:
                throw new IllegalArgumentException("Invalid value: " + value);
        }
    }
}
